diff options
Diffstat (limited to 'drivers/crypto/nx')
| -rw-r--r-- | drivers/crypto/nx/nx-842-crypto.c | 3 | ||||
| -rw-r--r-- | drivers/crypto/nx/nx-842.h | 21 |
2 files changed, 22 insertions, 2 deletions
diff --git a/drivers/crypto/nx/nx-842-crypto.c b/drivers/crypto/nx/nx-842-crypto.c index 2ffa1031c91f..95066f336b26 100644 --- a/drivers/crypto/nx/nx-842-crypto.c +++ b/drivers/crypto/nx/nx-842-crypto.c @@ -58,10 +58,11 @@ #include <linux/module.h> #include <linux/crypto.h> #include <linux/vmalloc.h> -#include <linux/nx842.h> #include <linux/sw842.h> #include <linux/ratelimit.h> +#include "nx-842.h" + /* The first 5 bits of this magic are 0x1f, which is an invalid 842 5-bit * template (see lib/842/842.h), so this magic number will never appear at * the start of a raw 842 compressed buffer. That is important, as any buffer diff --git a/drivers/crypto/nx/nx-842.h b/drivers/crypto/nx/nx-842.h index 1730f4da1cf6..4dbac11c2aa5 100644 --- a/drivers/crypto/nx/nx-842.h +++ b/drivers/crypto/nx/nx-842.h @@ -4,7 +4,6 @@ #include <linux/kernel.h> #include <linux/module.h> -#include <linux/nx842.h> #include <linux/sw842.h> #include <linux/of.h> #include <linux/slab.h> @@ -12,6 +11,12 @@ #include <linux/mm.h> #include <linux/ratelimit.h> +#define __NX842_PSERIES_MEM_COMPRESS (10240) +#define __NX842_POWERNV_MEM_COMPRESS (1024) + +#define NX842_MEM_COMPRESS (max_t(unsigned int, \ + __NX842_PSERIES_MEM_COMPRESS, __NX842_POWERNV_MEM_COMPRESS)) + /* Restrictions on Data Descriptor List (DDL) and Entry (DDE) buffers * * From NX P8 workbook, sec 4.9.1 "842 details" @@ -104,6 +109,13 @@ static inline unsigned long nx842_get_pa(void *addr) #define GET_FIELD(v, m) (((v) & (m)) >> MASK_LSH(m)) #define SET_FIELD(v, m, val) (((v) & ~(m)) | (((val) << MASK_LSH(m)) & (m))) +struct nx842_constraints { + int alignment; + int multiple; + int minimum; + int maximum; +}; + struct nx842_driver { char *name; struct module *owner; @@ -124,4 +136,11 @@ void nx842_platform_driver_unset(struct nx842_driver *driver); bool nx842_platform_driver_get(void); void nx842_platform_driver_put(void); +int nx842_constraints(struct nx842_constraints *constraints); + +int nx842_compress(const unsigned char *in, unsigned int in_len, + unsigned char *out, unsigned int *out_len, void *wrkmem); +int nx842_decompress(const unsigned char *in, unsigned int in_len, + unsigned char *out, unsigned int *out_len, void *wrkmem); + #endif /* __NX_842_H__ */ |